Options Skew Analytics

WST option chain

Strikes around the forward, as they were quoted at the close

Data as of 9 November 2026 (end of day)

2026-12-18(39 days)ATM 26.35%±35.74skew +3.64
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
09$163.20$167.00—$250.00—————
042$153.30$157.00—$260.00—————
065$143.50$146.50—$270.00—————
0155$133.50$136.60—$280.00—————
021$123.50$126.80—$290.00—————
014$113.60$117.80—$300.00—————
04$103.70$107.60—$310.00—————
09$93.80$97.50—$320.00—————
0175$84.00$87.10—$330.00—————
0103$74.30$78.10—$340.00—————
07$64.60$68.50—$350.00—————
09$55.20$58.90—$360.00—————
011$46.10$49.00—$370.00—————
934$37.50$40.40—$380.00—————
02$29.00$32.50—$390.0028.38%$4.50$6.701511
019$21.80$24.70—$400.0028.21%$7.30$10.00670
532$15.60$18.60—$410.0027.12%$11.00$13.4030
432$10.40$13.0025.99%$420.00—————
29$6.80$8.5025.32%$430.00—————
013$3.80$5.6024.73%$440.00—————
154$2.40$3.4024.81%$450.00—————

Forward $414.92. The 25-delta put carries +3.64 volatility points over the 25-delta call.

2027-03-19(130 days)ATM 32.49%±81.16skew +3.23
CallsStrikePuts
VolumeOpen intBidAskIV IVBidAskOpen intVolume
02$128.10$131.60—$290.00—————
07$118.80$122.30—$300.00—————
05$100.80$104.30—$320.00—————
03$92.10$95.60—$330.00—————
03$83.70$87.30—$340.00—————
06$75.70$79.00—$350.0035.28%$6.90$10.5070
07$68.00$71.10—$360.0034.85%$9.20$12.50110
02$60.00$63.70—$370.00—————
05$53.20$56.80—$380.0034.24%$15.00$18.0040
05$46.60$49.90—$390.0033.58%$18.40$20.9010
011$40.50$43.70—$400.0033.22%$22.10$24.9005
018$34.90$38.10—$410.0033.05%$26.50$29.5010
075$29.60$33.0032.55%$420.00—$31.10$34.20100
04$25.50$28.4032.44%$430.00—————
013$21.30$24.3032.07%$440.00—————
05$17.60$20.4031.58%$450.00—————
01$14.50$17.4031.44%$460.00—————
01$11.50$14.9031.18%$470.00—$62.40$65.7050
03$9.50$12.3031.01%$480.00—————
02$5.90$8.5030.59%$500.00—————

Forward $418.63. The 25-delta put carries +3.23 volatility points over the 25-delta call.

How to read this

Calls on the left, puts on the right, the strike between them — the layout every chain uses. Each block is one expiration, and the heading carries its days to expiry, the at-the-money implied volatility, and the one-standard-deviation move that volatility implies over that time.

Only the 21 strikes nearest the forward are stored, which is the part of the board that carries the volume. The shaded side is in the money: below the forward for calls, above it for puts.

Implied volatility is shown on the out-of-the-money side only. An in-the-money option is nearly all intrinsic value quoted on a wide market, so a volatility solved from it would look authoritative and mean very little. The price is still shown, because the price is real; the blank is deliberate.